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Full text of "Handbook Of Chemical Engineering - I"

258
CHEMICAL ENGINEERING
19; (3) brass, steel and cloth of other metals and alloys. Iron and steel cloth is for special purposes and can be tinned, galvanized or sherardized. (4) Silk screen or bolting cloth and silk gritz gauzes. Gritz gauzes are made in three weights of threadó X, XX, and XXX. Metal-screen cloth can now be bought with openings up to 4 in. and with wires up to 1 in. in diameter. At the other extreme a brass-screen
Opening in inches, ratio A/2 or 1.414	Opening in millimeters	Mesh	Diameter of wire, decimal of an inch
1.050	26.67		0.149
0.742	18.85		0.135
0.525	13.33		0.105
0.371	9.423		0.092
0.263	6.680	3	0.070
0.185	4.699	4 ,-	0.065>"
0.131	3.327	6	0.036
0.093	2.362	8	0.032
0.065	1.651	10	0.035
0.046	1.168	14	0.025
0.0328	0.833	20	0.0172
0.0232	0.589	28	0.0125
0.0164	0.417	35	0.0122
0.0116	0.295	48	0.0092
0.0082	0.208	65	0.0072
0.0058	0.147	100	0.0042
0.0041	0.104	150	0.0026
0.0029	0.074	200	0.0021
FOR CLOSER SIZING 65 TO 200 MESH
Opening in inches, ratio -\X2, or 1.189	Openings in millimeters	Mesh	Diameter of wire, decimal of an inch
0.0082	0.208	65	0.0072
0.0069	0.175	80	0.0056
0.0058	0.147	100	0.0042
0.0049	0.124	115	0.0038
0.0041	0.104	150	0.0026
0.0035	0.088	170	0.0024
0.0029,	0.074	200	0.0021
			
cloth may be purchased with 300 meshes to the linear inch, the diameter of the wire used in this screen being 0.0016 in. and the net linear opening 0.0017 in. Owing to the confusion in the gages under which wire cloth is sold, one principal manufacturer now states his catalog list in mesh but the varying openings and sizes of wire are given in decimal fractions of an inch under lateral columns.